Wrapped up another solid box with a clean chain from web exploitation to full host compromise.

Gained initial access through an IDOR vulnerability on the /user endpoint, which exposed an admin hash that cracked to wonderful1. This provided access to the Cacti dashboard as marcus. From there, exploiting CVE-2025-24367 led to a reverse shell inside a Docker container as www-data, where the user flag was retrieved.

Privilege escalation came from spotting an exposed Docker API. By deploying a privileged container and mounting the host filesystem, it was possible to break out of the container and access the Windows host, ultimately retrieving the root flag.

Nice reminder of how small web flaws can cascade into full infrastructure compromise when combined with misconfigurations like exposed Docker daemons.

#cybersecurity #penetrationtesting #redteam #docker #privilegeescalation #websecurity #ethicalhacking #infosec …

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